1. Abbreviation for “Shut your bitch-ass up” commonly used to roast or bully someone through digital communication 2. Abbreviation for “Stay young, beautiful, and unique” though this definition has been used as a joke to trick people into saying SYBAU
1. “You need to sybau, you can’t be talking.”
1. “sybau” (can be used by itself since it’s an abbreviation for a sentence)
2. “Ummm… yeah mom sybau stands for stay young, beautiful, and unique”